背景與目的:跑步在台灣日益盛行,跑步的著地型態有分前腳掌著地、中足著地、後腳跟著地,著地型態會影響足部受傷風險程度。但每個人在跑步時的著地型態可能會因坡度、速度和穿鞋與否而改變;另外,現今市面上類赤足鞋日益流行,其是否真有改變著地型態的效應呢?故本研究欲探討跑者在穿著一般慢跑鞋、類赤足鞋和赤腳三種狀態下,在不同跑步速度和坡度改變下,是否會影響到足部著地型態。 方法:本研究招募30名有慢跑習慣的健康男性,以隨機的方式請受測者選擇先穿著一般慢跑鞋、類赤足鞋或赤腳,於跑步機上初速以0%代表由走到跑的速度點,以100%代表可以達到的最大速度,在初始速度下,測試0%、5%、10%、15%四種坡度,再接續完成速度25%、50%、75%,接著完成三種狀態。統計分析方法使用三因子重複測量變異數分析(Three-way Repeated Measured ANOVA),來檢定兩種鞋款及赤足跑步這三種狀態,在不同速度以及不同坡度下的著地型態是否有差異,顯著水準設為p值小於0.05。 研究結果:本研究結果顯示,在任何速度及坡度下,赤足比類赤足鞋還要多的前中足著地比例,而類赤足鞋又比慢跑鞋還要多的前中足著地比例,達統計上顯著差異(p<0.05)。坡度隨著上升,前中足著地比例隨之上升,達統計上差異(p<0.05)。速度則是在初速0%時有最高的前中足著地比例,其次依序為75%、25%、50%,達統計上差異(p<0.05)。在鞋款與坡度間有交互作用發生,達統計上差異(p<0.05) 。 討論與結論:鞋款因素是赤足較好,表示我們穿鞋子方面如果腳底的保護越少,我們人們的著地型態會較容易使用前中足著地。速度因素則是0%較好而坡度因素則是15%較好。本研究發現在最高前中足著地比例組合是在赤足與坡度15%時搭配速度0%會出現最高比例,其次則是赤足配合坡度15%與速度15%。而類赤足鞋或許沒辦法像赤足一樣的更容易較前足著地,但與一般慢跑鞋相比有較多的前中足的著地方式。類赤足鞋有多一層保護,或許有較高的日常效益。
BACKGROUND AND PURPOSE: Running in Taiwan is increasingly prevalent, the strike pattern of running has divided forefoot strike ,midfoot strike and rearfoot strike. The strike pattern will affect the degree of foot injury risk. But everyone in the running of the strike type may be due to slope, speed and shoes or barefoot. In addition, the market today, the growing popularity of barefoot shoes, whether it really has effect to change the type of strike? Therefore, this study will explore the runners in general running shoes, barefoot shoes and barefoot three kinds of state, under different running speed and slope changes, will affect the foot landing patterns. METHODS: 30 healthy jogging men were recruited in this study. The subjects were randomly selected to wear general running shoes, barefoot shoes or barefoot. On the treadmill, The initial speed (0%) was represented the point between walking and running. 100% was the maximum speed. At initial speed, we test the four slope (0%, 5%, 10%, 15%) , and then continue to complete the speed of 25%, 50%, 75%. Complete three states (running shoes, barefoot shoes and barefoot). Three-way Repeated Measured ANOVA was used to determine whether there were differences between the two types of shoes and the barefoot running state at different speeds and at different gradients. Set the p value to be less than 0.05. RESULTS: The results of this study show that, at any speed and slope, the barefoot highter than barefoot shoes in the proportion of the forefoot and midfoot strike, and barefoot shoes highter than running shoes in the proportion of the forefoot and midfoot strike, and the difference was statistically significant (p <0.05). As the slope increased, the proportion of the forefoot and midfoot was increased, which was statistically different (p <0.05). The speed was the highest forefoot and midfoot strike at the 0% initial velocity, followed by 75%, 25% and 50%, which was statistically different (p <0.05). In the shoes and slope interaction between the occurrence of statistical difference (p <0.05). DISCUSSION AND CONCLUSIONS: The footwear factor is better for barefoot, which means that the less we protect our feet, the easier it is for our people to touch the ground before use. The speed factor is 0% better while the slope factor is 15% better. In this study, we found that the top-to-mid-aspect ratio was the highest in 0% of barefoot and 15% of slope, followed by 15% of slope and 15% of speed. The kind of barefoot shoes may not be as barefoot as easier to land than the forefoot, but in our daily efficiency will be higher. Class barefoot shoes can give us layers of protection, compared with the general jogging shoes have more front foot in the way.